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Pharmaceutical Impurity Reference Standards
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- Chemical Name:
- Spectinomycin Impurity B
- Structure:
- Chemical Name:
- Eriodictyol-8-glucoside
- CAS:
- 153733-96-1
- MF:
- C21H22O11
- Structure:
- Chemical Name:
- Naringin 4'-glucoside
- CAS:
- 17257-21-5
- MF:
- C33H42O19
- Structure:
- Chemical Name:
- 8-(benzo[b]thiophen-4-yl)-5,8-diazaspiro[4.5]decan-5-ium chloride
- CAS:
- 2143944-64-1
- MF:
- C16H21N2S+
- Structure:
- Chemical Name:
- 2-(4'-chloro-2,3,4,5-tetrahydro-[1,1'-biphenyl]-4-yl)-3-hydroxynaphthalene-1,4-dione
- CAS:
- 1809464-27-4
- MF:
- C22H17ClO3
- Chemical Name:
- Aprepitant impurity C
- Structure:
- Chemical Name:
- Ticagrelor Related Compound 14
- CAS:
- 2056269-94-2
- MF:
- C23H28F2N6O4S
- Structure:
- Chemical Name:
- Cefoxitin impurity E
- CAS:
- 2395025-32-6
- MF:
- C17H19N3O8S2
- Structure:
- Chemical Name:
- N-((4-(3-methyl-5-phenylisoxazol-4-yl)phenyl)sulfonyl)propionamide
- CAS:
- 477594-28-8
- MF:
- C19H18N2O4S
- Chemical Name:
- Moxifloxacin EP Impurity D HCl
- Structure:
- Chemical Name:
- Moxifloxacin Impurity 30
- CAS:
- 1395056-42-4
- MF:
- C21H24FN3O7
- Structure:
- Chemical Name:
- Tenofovir Impurity 37
- CAS:
- 161760-03-8
- MF:
- C10H15O6PS
- Structure:
- Chemical Name:
- Apremilast
- CAS:
- 1384967-20-7
- MF:
- C20H20N2O7S
- Structure:
- Chemical Name:
- Pramipexole Impurity 30
- CAS:
- 1802051-36-0
- MF:
- C13H24ClN3S
- Structure:
- Chemical Name:
- NZWJKTHFNLHUJO-NWZSJJIMSA-N
- CAS:
- 1422954-12-8
- MF:
- C22H26FN3O5S
- Structure:
- Chemical Name:
- LAT-NET
- CAS:
- 607351-44-0
- MF:
- C25H39NO4
- Structure:
- Chemical Name:
- N,N-(ethane-1,2-diyl)bis(4-methyl-N-(3-((4-methylphenyl)sulfonamido)propyl)benzenesulfonamide)
- CAS:
- 74676-47-4
- MF:
- C36H46N4O8S4
- Structure:
- Chemical Name:
- L-GLUCONO-1,5-LACTONE
- CAS:
- 52153-09-0
- MF:
- C6H10O6
- Structure:
- Chemical Name:
- Diltiazem impurity
- CAS:
- 115992-91-1
- MF:
- C17H18N2O3S
- Structure:
- Chemical Name:
- Raloxifene EP IMpurity
- CAS:
- 1700655-64-6
- MF:
- C13H15ClN2O2S
- Chemical Name:
- Parecoxib Impurity M
- Structure:
- Chemical Name:
- Cycloocta[b]pyridine, 2-(4-ethyl-1-piperazinyl)-4-[4-(4-ethyl-1-piperazinyl)phenyl]-5,6,7,8,9,10-hexahydro-
- CAS:
- 1648791-23-4
- MF:
- C29H43N5
- Chemical Name:
- Linagliptin Impurity O
- Chemical Name:
- Linagliptin Impurity T
- Structure:
- Chemical Name:
- (R)-2-((6-(3-aminopiperidin-1-yl)-3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl)-4-fluorobenzamide
- MF:
- C18H22FN5O3
- Chemical Name:
- Apremilast Impurity 2
- Chemical Name:
- Etoricoxib Impurity 16
- Chemical Name:
- Ibrutinib Impurity 2
- Chemical Name:
- Mirabegron Impurity 14
- Structure:
- Chemical Name:
- Vonoprazan Impurity 1
- CAS:
- 881732-90-7
- MF:
- C17H17N3O2S
- Structure:
- Chemical Name:
- Atenolol EP Impurity
- MF:
- C14H22N2O3
- Chemical Name:
- Cinacalcet Impurity 20
- Chemical Name:
- Dapagliflozin Impurity 11
- Chemical Name:
- Dasatinib Impurity C
- Structure:
- Chemical Name:
- Etoricoxib impurity Q
- CAS:
- 292067-97-1
- MF:
- C18H15ClN2S
- Chemical Name:
- Flucloxacillin Impurity
- Structure:
- Chemical Name:
- Fluorometholone Impurity
- CAS:
- 2796-99-8
- MF:
- C23H31FO7S
- Structure:
- Chemical Name:
- Verapamil Impurity
- CAS:
- 1551304-28-9
- MF:
- C12H19NO2
- Structure:
- Chemical Name:
- Clopidogrel impurity reference substance
- MF:
- C15H14ClNO2S
- Chemical Name:
- Vildagliptin Impurity
- Chemical Name:
- Aloeemodin-ω-O-β-D-glucopyranoside
- CAS:
- 29010-56-8
- MF:
- C21H20O10
- Structure:
- Chemical Name:
- ethyl 1-(4-chlorophenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate
- CAS:
- 2029205-62-5
- MF:
- C26H25ClN4O4
- Structure:
- Chemical Name:
- 1-Butanaminium, N,N,N-tributyl-, (1R,2S,5R)-2-(aminocarbonyl)-7-oxo-1,6-diazabicyclo[3.2.1]oct-6-yl sulfate
- CAS:
- 1192651-80-1
- MF:
- C23H46N4O6S
- Chemical Name:
- Dihydroxyoxaliplatin(Oxaliplatin Impurity Ⅲ)
- Chemical Name:
- cefditoren E-isomer(C=C)
- Chemical Name:
- Mixture of Lamivudine Impurity Ⅳ and Impurity Ⅴ
- Structure:
- Chemical Name:
- 2-Ethoxybenzimidohydrazide
- CAS:
- 889943-46-8
- MF:
- C9H13N3O
- Structure:
- Chemical Name:
- (E)-2-(6-(methoxycarbonyl)-2-oxoindolin-3-ylidene)-2-phenylacetic acid
- MF:
- C18H13NO5
- Structure:
- Chemical Name:
- 8-Epi-cyanocobalamin
- CAS:
- 41325-63-7
- MF:
- C63H88CoN14O14P
- Structure:
- Chemical Name:
- C-Desmethyl Atenolol
- CAS:
- 1797116-92-7
- MF:
- C13H20N2O3
- Structure:
- Chemical Name:
- Losartan Impurity 7
- CAS:
- 358685-13-9
- MF:
- C33H24Br2N4
- Structure:
- Chemical Name:
- Fenofibric Acid 1-Carboxyl-1-methylethyl Ester
- CAS:
- 1797121-54-0
- MF:
- C21H21ClO6
- Structure:
- Chemical Name:
- 2-Chloro-4'-fluorobenzophenone
- CAS:
- 1806-23-1
- MF:
- C13H8ClFO
- Structure:
- Chemical Name:
- Ambrisentan Impurity E
- CAS:
- 1312092-82-2
- MF:
- C21H18N2O3
- Structure:
- Chemical Name:
- Lamivudine Impurity 2
- CAS:
- 200396-21-0
- MF:
- C18H27N3O4S
- Structure:
- Chemical Name:
- Lamivudine Impurity 1
- CAS:
- 1235712-40-9
- MF:
- C8H11N3O4S
- Chemical Name:
- Moxifloxacin Related Impurity 3
- Structure:
- Chemical Name:
- Bisoprolol EP Impurity Q
- CAS:
- 1346604-00-9
- MF:
- C16H27NO4
- Structure:
- Chemical Name:
- Levofloxacin N-Oxide
- CAS:
- 117678-37-2
- MF:
- C18H20FN3O5
- Structure:
- Chemical Name:
- Oseltamivir EP Impurity A
- CAS:
- 1391047-93-0
- MF:
- C14H24N2O4
- Structure:
- Chemical Name:
- Quetiapine EP Impurity N
- CAS:
- 1800291-86-4
- MF:
- C29H41N5O3S
- Chemical Name:
- Ceftazidime Impurity
- Structure:
- Chemical Name:
- Chlorhexidine Digluconate Impurity N
- CAS:
- 152504-10-4
- MF:
- C15H25ClN8
- Structure:
- Chemical Name:
- S-Azetidin-3-yl ethanethioate HCl
- CAS:
- 886615-18-5
- MF:
- C5H9NOS
- Chemical Name:
- Olaparib Impurity C
- Chemical Name:
- Olaparib Impurity F
- Chemical Name:
- Dapoxetine Impurity 4
- Chemical Name:
- Glycopyrrolate impurity 3
- Chemical Name:
- Lamotrigine impurity B
- Chemical Name:
- Ramosetron Impurity 3
- Structure:
- Chemical Name:
- Loratadine Impurity 1
- MF:
- C22H23ClN2O2
- Structure:
- Chemical Name:
- Metoprolol IMpurity 6
- MF:
- C15H25NO3
- Chemical Name:
- Pitavastatin Impurity 5
- Chemical Name:
- Prasugrel Impurity C
- Chemical Name:
- Trifluridine Impurity 2
- Chemical Name:
- Cefazolin Impurity 4
- Chemical Name:
- Vonoprazan Impurity 3
- Chemical Name:
- Cinacalcene Impurity I
- Structure:
- Chemical Name:
- Valsartan Impurity 2
- MF:
- C24H29N5O3
- Chemical Name:
- Istradefylline Impurity 2
- Chemical Name:
- Etoricoxib Impurity 3
- Structure:
- Chemical Name:
- Apremilast Impurity 5
- CAS:
- 200710-04-9
- MF:
- C11H13NO4
- Chemical Name:
- Topiroxostat Imp.C
- Structure:
- Chemical Name:
- (3R,4S)-1-(4-chlorophenyl)-3-((S)-3-(4-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)azetidin-2-one
- CAS:
- 1700622-08-7
- MF:
- C24H21ClFNO3
- Structure:
- Chemical Name:
- Rabeprazole Impurity 2
- CAS:
- 1163685-31-1
- MF:
- C11H15NO4
- Chemical Name:
- Regorafenib Impurity 8
- Structure:
- Chemical Name:
- Flomoxef Impurity 5
- CAS:
- 134237-56-2
- MF:
- C25H23ClF2N2O6S
- Structure:
- Chemical Name:
- Ranitidine impurity
- CAS:
- 94167-82-5
- MF:
- C10H18N2O
- Chemical Name:
- nicergoline impurity E
- Structure:
- Chemical Name:
- ethyl(2R,4S)-5-([1,1'-biphenyl]-4-yl)-4-(4-ethoxy-4-oxobutanamido)-2-methylpentanoate
- MF:
- C26H33NO5
- Chemical Name:
- Tacrolimus Impurity C
- Chemical Name:
- Levodopa impurity 5
- Structure:
- Chemical Name:
- (R)-N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide
- CAS:
- 1223404-68-9
- MF:
- C21H22F2N6O2
- Structure:
- Chemical Name:
- Afatinib Impurity 18
- CAS:
- 2316847-95-5
- MF:
- C22H20ClFN4O4
- Structure:
- Chemical Name:
- Ivabradine Impurity 1 Hydrochloride
- CAS:
- 85175-52-6
- MF:
- C16H25ClN2O3
- Chemical Name:
- SofosBuvir Impurity 3
- Structure:
- Chemical Name:
- phenyl (4-((6-carbamoyl-7-methoxyquinolin-4-yl)oxy)-2-chlorophenyl)carbamate
- CAS:
- 417722-95-3
- MF:
- C24H18ClN3O5
- Structure:
- Chemical Name:
- Canagliflozin Impurity 10
- CAS:
- 1672658-93-3
- MF:
- C24H25FO6S
- Chemical Name:
- Canagliflozin Impurity F
- Chemical Name:
- Empagliflozin impurity E